JPH0569857U - Connection structure between insulated wire and crimp terminal - Google Patents

Abstract

(57) [Summary] [Object] To provide a connection structure between an insulated wire and a crimp terminal, in which electrical performance is improved and a range of thickness of a conductor core wire of the insulated wire that can be connected to the crimp terminal is widened. [Structure] In a connection structure of an insulated electric wire 5 for connecting a conductor core wire 6 of an insulated electric wire 5 to a conductor connection portion 3 of a crimp terminal 1 and a crimp terminal 1, an end portion of the conductor core wire 6 is folded back to have a cross-sectional area of 2
The doubled conductor core wire 6 is connected to the conductor connecting portion 3 of the crimp terminal 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection structure of an insulated wire and a crimp terminal for connecting the insulated wire to the crimp terminal.

[0002]

[Prior art]

 Conventionally, the connection between the insulated wire and the crimp terminal has been performed as follows. That is, as shown in FIG. 3, the crimp terminal 1 is composed of a terminal portion 2, a conductor connecting portion 3 and an insulating crimp portion 4, and as shown in FIG. The insulation layer 7 of the insulated electric wire 5 is crimped onto the insulation crimping portion 4 of the core wire 6. In this connection, in order to ensure conductivity, it is important that the connection structure between the conductor connecting portion 3 of the crimp terminal 1 and the conductor core wire 6 of the insulated wire 5 does not have an excessive contact electric resistance. is there.

[0003]

[Problems to be solved by the device]

 However, in the conventional connection structure, the contact electrical resistance may increase due to poor contact during crimping or aging during use. Such an increase in contact electric resistance causes heat generation, and this heat generation accelerates deterioration of the material of the crimp terminal and further increases electric resistance. As a result, there is a problem in that there is poor continuity and the resin material that houses the crimp terminal is melted and damaged.

[0004]

[Means and actions for solving the problem]

 The present invention relates to a connection structure between an insulated wire and a crimp terminal, which solves the above problems. In the connection structure between the insulated wire and the crimp terminal, the conductor core wire of the insulated wire is connected to the conductor connection portion of the crimp terminal, the conductor core wire is provided. It is characterized in that the conductor core wire whose cross-sectional area is doubled by folding back the end portion of is connected to the conductor connecting portion of the crimp terminal. As described above, when the conductor core wire whose end area is folded back and the cross-sectional area is doubled is connected to the conductor connecting portion of the pressure terminal, the area of the contact portion between the conductor core wire and the conductor connecting portion of the crimp terminal is reduced. The electrical contact resistance is increased to reduce the electrical contact resistance, and the electrical performance of the connection portion is improved. Moreover, since the cross-sectional area increases even if the conductor core wire is thin, the range of thickness of the conductor core wire that can be connected to the crimp terminal is widened.

[0005]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. 1 (a) and 1 (b) are explanatory views of an example of a connection structure between an insulated wire and a crimp terminal according to the present invention. In the figure, the reference numerals are used in the same manner as in the description of the conventional example. The crimp terminal 1 is composed of the terminal portion 2, the conductor connecting portion 3 and the insulating crimp portion 4, and the insulated wire 5 is composed of the conductor core wire 6 and the insulating layer 7 as in the conventional case. The end portion of the conductor core wire 6 is folded back, and the conductor core wire 6 is crimped onto the conductor connection portion 3 so that the surface formed by the bent conductor core wire 6 is parallel to the bottom surface of the conductor connection portion 3. FIG. 2 is an explanatory view of another embodiment according to the present invention, in which the end portion of the conductor core wire 6 is folded back in the same manner as in the above embodiment, but the surface formed by the bent conductor core wire 6 is The conductor core wire 6 is crimped onto the conductor connecting portion 3 so as to be perpendicular to the bottom surface of the conductor connecting portion 3. Thus, when crimping the conductor core wire, the surface formed by the bent conductor core wire at the end and the bottom surface of the conductor connecting portion are not limited to a specific angle.

[0006]

[Effect of the device]

 As described above, according to the present invention, in the connection structure of the insulated wire and the crimp terminal for connecting the conductor core wire of the insulated wire to the conductor connection portion of the crimp terminal, the end portion of the conductor core wire is folded back and the cross-sectional area is Double the conductor core wire to connect to the conductor connection part of the crimp terminal, so the electrical performance of the connection part is improved, and even if the conductor core wire is thin, the cross-sectional area increases, so it is connected to the crimp terminal. It has the excellent effect of widening the range of possible conductor core thicknesses.

[Brief description of drawings]

1A and 1B are explanatory views of an embodiment of a connection structure between an insulated wire and a crimp terminal according to the present invention.

FIG. 2 is an explanatory view of another embodiment according to the present invention.

FIG. 3 is a perspective view of a crimp terminal.

FIG. 4 is an explanatory view of a conventional connection structure between an insulated wire and a crimp terminal.

[Explanation of symbols]

 1 Crimping terminal 2 Terminal part 3 Conductor connecting part 4 Insulation crimping part 5 Insulated electric wire 6 Conductor core wire 7 Insulation layer 7

Claims (1)

[Scope of utility model registration request] 1. In a connection structure of an insulated wire for connecting a conductor core wire of an insulated wire to a conductor connection portion of a crimp terminal and a crimp terminal, a conductor core wire having a doubled cross-sectional area by crimping an end portion of the conductor core wire is crimped. A connection structure between an insulated wire and a crimp terminal, which is connected to a conductor connecting portion of the terminal.